Accommodation of Plastic Deformation by Ultrasound-Induced Grain Rotation

Journal article (2015)
Department
Materials Science and Engineering (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2015 The Minerals, Metals & Materials Society and ASM International
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Published Date

13-06-2015

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Source:

Metallurgical and Materials Transactions A, 46 (8), 2015

Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Abstract

Electron backscatter diffraction was used to investigate the softening effect in low-carbon steel [Fe-0.051C-0.002Si-0.224Mn-0.045Al (wt pct)] during tensile deformation with in situ ultrasonic treatment. A bimodal grain size distribution is observed with relatively small equiaxed grains with an average diameter of 10 ?m at the grain boundaries of large elongated grains. The formation of these relatively small equiaxed grains is interpreted in terms of dynamic recrystallization by lattice and sub-grain rotation.

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